Brake



Dec.. 26, 1933. o E R 1,941,167

' BRAKE Filed Oct. 15, 1930 1 N VEN TOR.

Otto Elms/warn,

Q /5 06 vulflu.

A TTORNEYJ Patented at. as, 1933 I I v r 1,941,

iJNITsD STATES PA-TENT orFlce be efficient in its operation.

.15 mobile transmission and showing my brake;

I btto E. Ei shburn, Muncie, Ind., assignorto War- 7 ner'Gear Company, Muncie lnd a corporation- 7 a. tl fl e I ,v I Application October 15, 1930. Serial No. 488,908 M 4 5, ,sola i sf (cuss-71y V My invention relates to improvement in brake vides a slightly resilient connection between the operating mechanism and particularly to brake brake operating lever and the lever 12. For operating mechanism for automobilesn My insuppolti the .free d jb band, a vention is advantageously applicable to that type supDOl'ting arm 2 is secured by the bolts to the 5 of brake whichi's connected to the propeller shaft side f the transmission housing and hasits f of an automobile. t v e end received between the portions 10 and 11. of It is one of the objects of my invention to proa of th a 9. Thi sup is P o vide a brake which shall be extremely simple, with elongated slots 26 and 27 to accommodate which shall require but few parts and which shall the movement of the pins 17 and 14 and. when I the parts are in their normal or released posi- 5 For the purpose of disclosing my invention 1 tion the lower portion of the brake band is prehave illustrated one embodiment thereof in the Vented from dropping away from the drum by accompanying drawing, in which: the support of the arm 24'and the upper end of I Fig. 1 is a side elevation of a part of an autothe brake band is held away from the brake drum due to the fact that the pin 17 is restingin the 7 Fig. 2 is a plan view thereof; bottom of the slot 26 with the lever rocked to Fig. 3 is an end View; and maintain the upper end of the band raised. Fig. 4 is a perspective view of one of the brake For ma ta ing the b a e Set I provide a? V band lugs. dog 28 pivoted on the lever 19 having a tooth 29 2o In the structure illustrated the brake drum 1 adapted t n a in the at t 30 on t a is mountedon the propeller shaft 2, of an auto- 31, which is stationarily mounted on the bolts 25, mobile transmission, immediately to the rear of This dog is manipulated by a rod 32 adjacent the the transmission housing 3. This drum is sur-' lever 20. In operation, when the'lever 20 is rounded by a brake band 4 which, intermediate shifted to the left looking at Fig.1, the lever 12- r 25, of its ends is provided with a support 5 adapted is pulled to the right thereby rocking the arm 13 v to receive a supporting lug 6 mounted on the tending to raise the pin 17 and draw the pint14 1 transmission housing. An adjusting screw '7 in downwardly thus contracting the brake band the support 5, has its end engaging the lug 6 for on the drum. A reverse movement of the parts the purpose of adjusting the brake band atthis will, of course, expand the brake band and release 30' point. The free ends of the brake band lie dithe brake. V V

ametrically opposite the anchor point of the band I -I claim as my invention: and each of these free ends is provided with an 1. In an automobile vbrake, the combination operating ear 8 comprising a base portion 9 sewith a brake band, of an arm extending transcured to the free end of the band and an extenversely of the band, pivot pins extending through .3 5 sion portion 10, to one side of the center of thethe opposite ends of the arm and through the base portion doubled back upon itself as at 11. endsof the band to connect its opposite ends The cars are reversely mounted so that the exto theiree ends of the band, means for rocking tension 10 and bent back portions overlap as said arm to exert a pull in opposite directions on shown in Fig. 1. the free ends of said band and means for an- 7 40 An operating lever 12 is provided with a right choring said free ends against transverse dis- 5 angle arm 13. The free end of this arm is conplacement. v t a V nected to a pin 14 supported in openings 15 and 2. In an automobile brake, the combination 16 in the extension 10 and bent back portion 11 with a brake band, of an arm extending transof the upper ear. of the band. The opposite end versely of the band, pivot pins extending through 45. of the right angle lever 13 is similarly connected the opposite ends of the arm and through the to a'pin 17 in the bottom ear 9 of the band, the band whereby the arm is connected at each end lower end of the lever 12 isconnected through a I to the free ends of the brake band, means for link mechanism 18 with the bottom end 19 of rocking said arm to exert a pullin opposite die brake operating lever 20 pivoted t0 the srections on the free ends of the band, and means 5 mission O This Connecting g for limiting therocking movement of the arm comprises a U shaped member 18, the two ends t 1 m in one direction t of which are pivotally connected to the lever 12. 3, In an automobile brake, the combination A rod 2 e e d t e 0f the U a d with a brake band having extensions at its opinterposed between. a nut 22 on the rod and at 1 posite free ends lying side by side, a transversely the'base of the U is acoiled spring 23, which proextending arm,p ivot pins extending through the ends of the arm and the free ends of the band whereby the arm is pivotally connected to said extensions, means for rocking said arm to exert a pull in opposite directions of said free ends of the brake band, and supporting means for the free ends of the band which prevents lateral displacement thereof while permitting longitudinal movement of the ends.

4. In an automobile brake, the combination with a brake band, of a lever having a transverse arm, pivot pins extending through the free ends of the arm and the free ends of said band so that each point of connection formsa fulcrum for the lever in its action on the opposite end of the band and means independent of the band for preventing transverse displacement of the lever.

5. In an automobile brake, the combination with a brake band having extensions on each of its free ends lying side by side and a lever having a transverse arm and pivot pins extending through its ends and through said extensions and means engaged by the pivot pins for preventing transverse displacement of the ends of the band.

6. In an automobile brake, the combination with a brake band having extensions on each of its free ends lying side by side, pivot pins connected to each of said extensions, a supporting member having slots through which said pivot pins extend, a lever having a transversely ex-,

tending arm connected at its opposite ends to said pins.

'7. In an automobile brake, the combination with a brake band having extensions on each of its ends lying side by side, each of said extensions being bent back to form a stirrup, an operating lever having transversely extending arms lying within said stirrups and pins extending through said stirrup and the opposite ends of the arm for connecting the same to the stirrup.

8. In an automobile brake, the combination with a stationary support, of a brake band having overlapping extensions lying in the same plane and slidably embracing said support, a transversely extending arm, pivot pins extending through the overlapping ends of said brake band and the free ends of said arm and passing through slots in said support, and a rocking lever for said transversely extending arm.

' OTTO E. FISHBURN. 

